<div>
    <button nz-button nzType="primary" (click)="readTextFile()">Load File</button>&nbsp;
    <button nz-button nzType="primary" (click)="writeTextFileSync()">Save File</button>&nbsp;
    <button nz-button nzType="primary" (click)="loadChart()">Load Chart</button>&nbsp;
    <button nz-button nzType="primary" (click)="connect()">Connect</button>&nbsp;
</div>
<div>
    <input nz-input [(ngModel)]="remotePath" />
</div>
<div>
    <op-e-chart [options]="options" chartHeight="400px"></op-e-chart>
</div>
<div>
    {{fileContent}}
</div>